grandmother with two daughters, seemed an unlikely suspect. She worked as a security guard at the Seattle-Tacoma airport and lived a seemingly happy life with her second husband Bruce in a trailer on a large woody lot. Neighbours said she was cheerful and hard-working and seemed genuinely grief-stricken when Bruce suddenly died. But then FBI agent Jack Cusack, who was now heading the investigation, remembered something seemingly insignificant another agent had told him earlier – “Stella Nickell has a fish tank in her trailer.”
Agents combed pet stores to see if anyone recalled selling Algae Destroyer to Nickell. On 25 August 1986, a clerk at a store in Kent identified Stella Nickell from a photo montage. She stuck out in his mind because she had a little bell attached to her purse and he called her “the woman who jingled”. Intrigued, FBI agents began a background check on the grandmother who had now become their prime suspect.
Between 1968 and 1971, she had convictions in California for cheque fraud, forgery and child abuse. What’s more the Nickells were chronically short of money, barely escaping bankruptcy recently and the bank had been moving to foreclose on their trailer before Bruce died.
The crisis had been averted when the state had paid out $31,000 in life-assurance, a policy that they maintained as Bruce Nickell’s employer. However, they would have paid out $176,000 if his death had been “accidental” – under the policy being poisoned by a random killer would have qualified as accidental. The problem was that the doctor who examined Bruce had failed to detect the cyanide. The autopsy said that her husband had died of natural causes. Stella Nickells had called the hospital to question the post-mortem findings. She stood to make an extra $105,000 if the cyanide was found. That was why she had had called the police.
Furthermore, in the year before his death, Stella had taken out two $20,000 policies on Bruce’s life. Now she had even filed a wrongful death suit against Bristol-Myers for “contributing to” her husband’s death.
Up until this point, Cusack had been trying to find a link between the murders of Sue Snow and Bruce Nickell. Now he was faced with the chilling thought that Stella Nickell had put bottles of Excedrin laced with cyanide on drug store shelves – risking the lives of many others and taking one – to make the murder of her husband look like an accident.
On 18 November, Cusack asked Stella Nickell to come in for a routine interview at FBI headquarters in Seattle. As a dark-haired, middle-aged woman in a buckskin coat walked into his office sat down, Cusack heard a soft jingle from the bell on her purse.
First, he went over the details of her husband’s death, then asked where and when she had bought the tainted bottles. Had she ever bought Algae Destroyer? he asked. She said no. Then he asked whether she had ever bought extra life assurance on her husband. Again, she said no.
Cusack had caught her out lying, twice. So he asked Stella Nickell if she would take a polygraph test. She refused, sobbing like a grieving widow and saying that she was not in a fit state to undergo any further questioning. Cusack let it go at that, but kept up the pressure in what he calls his “pebbles-on-the-roof” technique.
“The suspect gets the impression we’re interviewing everyone they know. They begin to think we know about every mistake they make,” he said. “It’s like they’re almost asleep at night and there it is again – ping, ping, ping on the roof.”
Four days after the first interview, Stella Nickell called Cusack and agreed to take the lie-detector test. Once she was hooked up to the polygraph machine, Cusack asked if she put cyanide in Excedrin capsules. She calmly denied it, but the jump in the needles measuring her pulse rate and her breathing told a different story.
Unfortunately, polygraph tests are rarely admissible in court, so Cusack switched the
Agents combed pet stores to see if anyone recalled selling Algae Destroyer to Nickell. On 25 August 1986, a clerk at a store in Kent identified Stella Nickell from a photo montage. She stuck out in his mind because she had a little bell attached to her purse and he called her “the woman who jingled”. Intrigued, FBI agents began a background check on the grandmother who had now become their prime suspect.
Between 1968 and 1971, she had convictions in California for cheque fraud, forgery and child abuse. What’s more the Nickells were chronically short of money, barely escaping bankruptcy recently and the bank had been moving to foreclose on their trailer before Bruce died.
The crisis had been averted when the state had paid out $31,000 in life-assurance, a policy that they maintained as Bruce Nickell’s employer. However, they would have paid out $176,000 if his death had been “accidental” – under the policy being poisoned by a random killer would have qualified as accidental. The problem was that the doctor who examined Bruce had failed to detect the cyanide. The autopsy said that her husband had died of natural causes. Stella Nickells had called the hospital to question the post-mortem findings. She stood to make an extra $105,000 if the cyanide was found. That was why she had had called the police.
Furthermore, in the year before his death, Stella had taken out two $20,000 policies on Bruce’s life. Now she had even filed a wrongful death suit against Bristol-Myers for “contributing to” her husband’s death.
Up until this point, Cusack had been trying to find a link between the murders of Sue Snow and Bruce Nickell. Now he was faced with the chilling thought that Stella Nickell had put bottles of Excedrin laced with cyanide on drug store shelves – risking the lives of many others and taking one – to make the murder of her husband look like an accident.
On 18 November, Cusack asked Stella Nickell to come in for a routine interview at FBI headquarters in Seattle. As a dark-haired, middle-aged woman in a buckskin coat walked into his office sat down, Cusack heard a soft jingle from the bell on her purse.
First, he went over the details of her husband’s death, then asked where and when she had bought the tainted bottles. Had she ever bought Algae Destroyer? he asked. She said no. Then he asked whether she had ever bought extra life assurance on her husband. Again, she said no.
Cusack had caught her out lying, twice. So he asked Stella Nickell if she would take a polygraph test. She refused, sobbing like a grieving widow and saying that she was not in a fit state to undergo any further questioning. Cusack let it go at that, but kept up the pressure in what he calls his “pebbles-on-the-roof” technique.
“The suspect gets the impression we’re interviewing everyone they know. They begin to think we know about every mistake they make,” he said. “It’s like they’re almost asleep at night and there it is again – ping, ping, ping on the roof.”
Four days after the first interview, Stella Nickell called Cusack and agreed to take the lie-detector test. Once she was hooked up to the polygraph machine, Cusack asked if she put cyanide in Excedrin capsules. She calmly denied it, but the jump in the needles measuring her pulse rate and her breathing told a different story.
Unfortunately, polygraph tests are rarely admissible in court, so Cusack switched the
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